[sorry about crossposting] Hi I'm just starting with mapreduce. Examples worked fine, so I started doing my stuff. Strange thing happened and I can't figure out what's going on : no problem with this one : public void map(Key key, Entity value, Context context) { if (value.getProperty("my_boolean").equals(true)) { } But if instead of a boolean I want to use a Flag (basically a dataobject, an enum of strings...) public void map(Key key, Entity value, Context context) { if (value.getProperty("my_flag").equals(Flag.STATUS_NOT_TREATED)) { } then .... ATTENTION: /mapreduce/mapperCallback java.lang.NullPointerException at com.ff.mtp.mapper.Mapper.map(Mapper.java:48) at com.ff.mtp.mapper.Mapper.map(Mapper.java:1) at com.google.appengine.tools.mapreduce.MapReduceServlet.processMapper(MapRedu ceServlet.java: 608) at com.google.appengine.tools.mapreduce.MapReduceServlet.handleMapperWorker(Ma pReduceServlet.java: 658) at com.google.appengine.tools.mapreduce.MapReduceServlet.doPost(MapReduceServl et.java: 227) I don't understand why callbacking ? Beyond that, the NullPointerException shall be caused because of non defining a callback point in my mapreduce.xml, but I don't want a callback right now ! Thanks.
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